Nice one Ian - I made a few changes to the motor and also removed the door. It is now fitted with a water pump and runs extremely well. One good thing it runs at a realistic slow speed and the water cooling works quite well as the only cooling the engine has is the top plate. Here's a pic of it with...

I see your point Ian. One of the computer radiators are cheap and seem effective as I have used them before. Possible solution is to mount the radiator up at 300mm high with a box fixed around it with vent holes in the bottom. As the radiator gets hot an airflow should start automatically from below...

I was going to use a pump with the model using a tower to cool the water. The more I think of it though, it would have to be 400mm high for it to work as a natural ventilated system. The water at the top would be warm which would get the air flow coming in from the bottom. Feasible I think, However ...

Yep! Should have listened to you Ian - Painted it, and guess what! It would not go no matter how hard I tried :sad: , however I eventually got it finished and operating correctly. Certainly isn't any horse power here, but it does run realistically - didn't need to add water to the cooling as it run ...

I am looking at making a cooling tower for one of my hot air model engine. The design will be as below, but I am wondering if anyone out there on the Forum has successfully made something like this that works.
Trev

That's quite a beautiful engine you have made Ian and I do like the radiator. I have just recently brought a computer radiator which suits a small fan and I will be looking forward to using it on a small power house like the one you have built. I must try and contact the two modelers you have mentio...

Yes you can. If you look under utube SunPulse they give you the plans basically for doing it. I would expect it to be costly, especially the heating of the oil and or water. Here is the links - https://www.youtube.com/watch?v=OmgJsjgWpHI - https://www.youtube.com/watch?v=mpBa0ntXANI&feature=share Tr...

Know that feeling Ian (hee hee). Here are some pictures of the finished parts I did. I still need to finish the meths burner and fire box proper. Had to borrow a milling machine from my mate to make water channels in the main block and then screw on a top plate, Whew!!! That was a chore and many scr...

Pretty awesome. Certainly would be nice to have one of those. I made up the displacer and the regenerator and finally got it all together today. I ended up with a 20mm depth displacer and a 20mm stroke. Fired it up and away she went. Pretty good watching the linkage work. I will set up some pics aft...

Thanks Ian. Nice looking engines and I hope mine will look something of the same. I used a small milling machine from a neighbour to make a water channel through the top section and I might as well make a small water cooler on the bottom as well. After a lot of thought, I will go with an internal re...